Even a child could see the division between what the Galileans [i.e., Christians] say they believe and what, in fact, they do believe, as demonstrated by their actions. A religion of brotherhood and mildness which daily murders those who disagree with its doctrines can only be thought hypocrite, or worse.
It comes from history. It comes from the record of the Inquisition, persecuting heretics and torturing Jews and all that sort of stuff; and it comes from the other side, too, from the Protestants burning the Catholics. It comes from the insensate pursuit of innocent and crazy old women, and from the Puritans in America burning and hanging the witches — and it comes not only from the Christian church but also from the Taliban. Every single religion that has a monotheistic god ends up by persecuting other people and killing them because they don't accept him. Wherever you look in history, you find that. It’s still going on.
It was not Christianity which freed the slave: Christianity accepted slavery; Christian ministers defended it; Christian merchants trafficked in human flesh and blood, and drew their profits from the unspeakable horrors of the middle passage. Christian slaveholders treated their slaves as they did the cattle in their fields: they worked them, scourged them, mated them , parted them, and sold them at will. Abolition came with the decline in religious belief, and largely through the efforts of those who were denounced as heretics.
The case of the general talk of "progress" is, indeed, an extreme one. As enunciated today, "progress" is simply a comparative of which we have not settled the superlative. We meet every ideal of religion, patriotism, beauty, or brute pleasure with the alternative ideal of progress—that is to say, we meet every proposal of getting something that we know about, with an alternative proposal of getting a great deal more of nobody knows what.
I think all the heretics I have known have been virtuous men. They have the virtue of fortitude, or they would not venture to own their heresy; and they cannot afford to be deficient in any of the other virtues, as they would give advantage to their many enemies; and they have not, like orthodox sinners, such a number of friends to excuse or justify them.
Without self-knowledge you have no root in yourselves personally; you may endure for a time, but under affliction or persecution your faith will not last. This is why many in this age (and in every age) become infidels, heretics, schismatics, disloyal despisers of the Church. They cast off the form of truth, because it never has been to them more than a form. They endure not, because they never have tasted that the Lord is gracious; and they never have had experience of His power and love, because they have never known their own weakness and need.